XML 46 R40.htm IDEA: XBRL DOCUMENT
v3.19.3

Loans and Allowance for Loan Losses - Impaired Loan Portfolio (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans with a valuation allowance, Related Allowance | $ 745 |  | $ 745 |  | $ 534
Total impaired loans, Recorded Investment | 6,275 |  | 6,275 |  | 3,559
Total impaired loans, Unpaid Principal Balance | 6,653 |  | 6,653 |  | 3,652
Total impaired loans, Average Recorded Investment | 5,946 | $ 3,429 | 5,424 | $ 3,129 |
Total impaired loans, Interest Income Recognized | 15 | 33 | 53 | 84 |
Non PCI Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 1,708 |  | 1,708 |  | 2,354
Impaired loans without a valuation allowance, Unpaid Principal Balance | 1,713 |  | 1,713 |  | 2,387
Impaired loans with a valuation allowance, Recorded Investment | 845 |  | 845 |  | 1,205
Impaired loans with a valuation allowance, Unpaid Principal Balance | 845 |  | 845 |  | 1,265
Impaired loans with a valuation allowance, Related Allowance | 629 |  | 629 |  | 534
Impaired loans without a valuation allowance, Average Recorded Investment | 1,527 | 2,644 | 1,879 | 2,188 |
Impaired loans without a valuation allowance, Interest Income Recognized | 10 | 25 | 43 | 55 |
Impaired loans with a valuation allowance, Average Recorded Investment | 748 | 756 | 800 | 930 |
Impaired loans with a valuation allowance, Interest Income Recognized | 5 | 8 | 17 | 26 |
Non PCI Loans [Member] | Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 257 |  | 257 |  | 636
Impaired loans without a valuation allowance, Unpaid Principal Balance | 262 |  | 262 |  | 648
Impaired loans with a valuation allowance, Recorded Investment | 0 |  | 0 |  | 0
Impaired loans with a valuation allowance, Unpaid Principal Balance | 0 |  | 0 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 0 |  | 0
Impaired loans without a valuation allowance, Average Recorded Investment | 258 | 1,117 | 435 | 802 |
Impaired loans without a valuation allowance, Interest Income Recognized | 3 | 12 | 28 | 27 |
Impaired loans with a valuation allowance, Average Recorded Investment | 0 | 0 | 12 | 6 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 | 1 | 0 |
Non PCI Loans [Member] | Consumer Real Estate [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 751 |  | 751 |  | 1,073
Impaired loans without a valuation allowance, Unpaid Principal Balance | 751 |  | 751 |  | 1,089
Impaired loans with a valuation allowance, Recorded Investment | 394 |  | 394 |  | 163
Impaired loans with a valuation allowance, Unpaid Principal Balance | 394 |  | 394 |  | 205
Impaired loans with a valuation allowance, Related Allowance | 206 |  | 206 |  | 26
Impaired loans without a valuation allowance, Average Recorded Investment | 568 | 887 | 768 | 769 |
Impaired loans without a valuation allowance, Interest Income Recognized | 4 | 10 | 8 | 22 |
Impaired loans with a valuation allowance, Average Recorded Investment | 396 | 290 | 248 | 576 |
Impaired loans with a valuation allowance, Interest Income Recognized | 4 | 2 | 6 | 13 |
Non PCI Loans [Member] | Construction and Land Development [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 700 |  | 700 |  | 547
Impaired loans without a valuation allowance, Unpaid Principal Balance | 700 |  | 700 |  | 547
Impaired loans with a valuation allowance, Recorded Investment | 0 |  | 0 |  | 0
Impaired loans with a valuation allowance, Unpaid Principal Balance | 0 |  | 0 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 0 |  | 0
Impaired loans without a valuation allowance, Average Recorded Investment | 701 | 547 | 637 | 547 |
Impaired loans without a valuation allowance, Interest Income Recognized | 3 | 0 | 5 | 0 |
Impaired loans with a valuation allowance, Average Recorded Investment | 0 | 0 | 14 | 0 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 | 0 | 0 |
Non PCI Loans [Member] | Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 0 |  | 0 |  | 69
Impaired loans without a valuation allowance, Unpaid Principal Balance | 0 |  | 0 |  | 70
Impaired loans with a valuation allowance, Recorded Investment | 451 |  | 451 |  | 955
Impaired loans with a valuation allowance, Unpaid Principal Balance | 451 |  | 451 |  | 973
Impaired loans with a valuation allowance, Related Allowance | 423 |  | 423 |  | 442
Impaired loans without a valuation allowance, Average Recorded Investment | 0 | 77 | 25 | 62 |
Impaired loans without a valuation allowance, Interest Income Recognized | 0 | 2 | 1 | 5 |
Impaired loans with a valuation allowance, Average Recorded Investment | 352 | 393 | 498 | 280 |
Impaired loans with a valuation allowance, Interest Income Recognized | 1 | 5 | 10 | 10 |
Non PCI Loans [Member] | Consumer and Other [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans without a valuation allowance, Recorded Investment | 0 |  | 0 |  | 29
Impaired loans without a valuation allowance, Unpaid Principal Balance | 0 |  | 0 |  | 33
Impaired loans with a valuation allowance, Recorded Investment | 0 |  | 0 |  | 87
Impaired loans with a valuation allowance, Unpaid Principal Balance | 0 |  | 0 |  | 87
Impaired loans with a valuation allowance, Related Allowance | 0 |  | 0 |  | 66
Impaired loans without a valuation allowance, Average Recorded Investment | 0 | 16 | 14 | 8 |
Impaired loans without a valuation allowance, Interest Income Recognized | 0 | 1 | 1 | 1 |
Impaired loans with a valuation allowance, Average Recorded Investment | 0 | 73 | 28 | 68 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 1 | 0 | 3 |
Purchased Credit Impaired Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 3,722 |  | 3,722 |  | 0
Impaired loans with a valuation allowance, Unpaid Principal Balance | 4,095 |  | 4,095 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 116 |  | 116 |  | 0
Impaired loans with a valuation allowance, Average Recorded Investment | 3,671 | 29 | 2,745 | 11 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 | (7) | 3 |
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 2,516 |  | 2,516 |  |
Impaired loans with a valuation allowance, Unpaid Principal Balance | 2,834 |  | 2,834 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 35 |  | 35 |  | 0
Impaired loans with a valuation allowance, Average Recorded Investment | 2,520 | 29 | 1,894 | 11 |
Impaired loans with a valuation allowance, Interest Income Recognized | 0 | 0 | (10) | 3 |
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired loans with a valuation allowance, Recorded Investment | 1,206 |  | 1,206 |  |
Impaired loans with a valuation allowance, Unpaid Principal Balance | 1,261 |  | 1,261 |  | 0
Impaired loans with a valuation allowance, Related Allowance | 81 |  | 81 |  | $ 0
Impaired loans with a valuation allowance, Average Recorded Investment | 1,151 | 0 | 851 | 0 |
Impaired loans with a valuation allowance, Interest Income Recognized | $ 0 | $ 0 | $ 3 | $ 0 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income on financing receivables, for which there is a related allowance for credit losses, recognized on a cash-basis method of accounting that the financing receivables were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditLossStatusAxis=smbk_ReceivablesOtherthanReceivablesAcquiredwithDeterioratedCreditQualityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=smbk_ConstructionPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |